Screw type closure for container pivotally supporting a resiliently mounted pressure closure for adjacent opening



P 1950 J. A. JOHNSON SCREW TYPE CLOSURE FOR CONTAINER PIVOTALLYSUPPORTING A RESILIENTLY MQUNTED PRESSURE CLOSURE FOR ADJACENT OPENINGFiled March 21,1946

INVENTOR, .L/OHN JoH/vsq/v, fr 4.

firm? NE 2 Patented Apr. 25, 1950 SCREW TYPE CLOSURE FOR CONTAINERPIVOTALLY SUPPORTING A RESILIENTLY MOUNTED PRESSURE CLOSURE FOR AD- JAGENT OPENING John A. Johnson, Crawfordsville, Ind.

Application March 21, 1946, Serial No. 656,034

1 Claim.

This invention relates to a fire extinguisher of that type employing achemical in powdered form, and relates particularly to means forpreventing escape of the powder through the spraying or blowing nozzlebefore the extinguisher is to be used. A primary object of the inventionis to provide an extremely simple and yet most effective cap for thedispensing nozzle which will always be available without danger offalling out or accidentally being removed. A further primary object ofthe invention is to provide such a structure in an exceedingly simpleand yet durable form which will permit low-cost production.

These and other objects and advantages of the invention will becomeapparent to those versed in the art in the following description made inaccordance with the accompanying drawing, in which:

Fig. 1 is a view in side elevation of an extinguisher to which theinvention is applied;

Fig. 2, a view in end elevation; and,

Fig. 3, a view in fragmentary side elevation of the filling anddispensing and of the extinguisher in partial section on a line 3--3 inFig. 2.

Like characters of reference indicate like parts throughout the severalviews in the drawing.

The fire extinguisher III is generally cylindrical in shape and isprovided with a filler neck I I with which is engaged a cap I2. In theform herein shown, this cap I2 screw threadedly engages over the outsideof the neck II. The neck II is positioned eccentrically of the body ofthe extinguisher ID to provide space for the discharging or dispensingnozzle I3 through which the contents of the extinguisher II) areexpelled in the normal operation of applying the contents to the base ofa fire.

A spring I4 has one end portion rockably attached to the cap I2 by anysuitable means such as by a rivet I5. The other end of the spring I4 isprovided with a rounded boss I6 spaced a radial distance from the rivetI5 to permit that boss I6 to center over the orifice of the nozzle I3when the spring I4 is swung thereover. gasket I I which may be made offelt covers the boss I6 so that the spring I4 may compressibly engagethe felt around the edge portion of the nozzle orifice centered by theboss I6 pressing thereagainst. I

The spring I4 normally tends to spring inwardly toward the end of theextinguisher It, at least by a portion adjacent the rivet I 5 to bearagainst the face of the cap I2 sufiioiently to require that the spring I4 be lifted outwardly from the cap by its outer end to engage over theend of the nozzle I3 in order that the yielding pressure may be appliedto retain the felt across the end of the nozzle. When the extinguisheris about the rivet IS, the tension causing the spring I4 to swinginwardly toward the end of the extinguisher, and thereby any swinging ofthe spring I 4 would cause its outer end to contact against the side ofthe nozzle I3 rather than to appear over its discharging end. That isthe spring I4 when shifted to one side of the opening of the nozzle I3will automatically spring back and thus not be permitted to return ofits own accord across the opening of the nozzle. While this action isobtained, the presence of the spring I4 and its mounting on the cover I2will not interfere with the removal of that cover to permit refilling ofthe extinguisher since the spring I4 is pivotly attached to the cover.This means that the cover I2 may be revolved on the neck I I to removeit therefrom without any attention having to be paid to the spring I 4since the cover I 2 may turn in a revolving manner in respect to thespring I4. Of course when the cap I2 is completely removed and then isreturned after the filling operation, the spring member I4 will have tobe swung around and its outer end lifted up to set over the end of thenozzle I3.

While I have herein shown the invention in the one best form as nowknown to me, it is obvious that structural details may be changedwithout departing from the spirit of the invention, and I therefore donot desire to be limited to that precise form beyond the limitations asmay be required by the accompanying claim.

I claim:

Closure means for a container having a screwthreaded portion throughwhich the container may be filled and a spray nozzle opening located toone side of and lying in a plane substantially normal to the axis of thethreads of said portion, comprising a cover to screw-threadedly engagesaid portion to be advanced and retracted therealong; an elastic leafmember; means pivotally securing an end portion of the leaf member tosaid cover; said leaf member having a length suflicient to swing by itsother end portion about said securing means across said nozzle opening,said other end portion being formed to seat compressibly against themargin of said nozzle opening whereby advancement of said cover on saidportion will increase the pressure of said leaf member against thenozzle opening member.

JOHN A. JOHNSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 619,750 Hopkins Feb. 21, 1899728,433 Baeuerle May 19, 1903 1,865,269 Munday June 28, 1932

